Similar to why 1st Ed base is considered the 1st set, as its true for English, but obviously there were prior Japanese releases
Details Set: BREAKthrough Card Number: 68/162 Rarity: Common Illustrator: MAHOU Retreat Cost: 1 Weakness: Psychic HP: 60 Stage: Basic Card Type: Psychic Name: Ralts Finish: Regular Attack #1: P Nap Heal 30 damage from this Pokmon
That sparked the latest price surge, which is still ongoing
There are only so many key pieces to make Xander super impactful, and those cards have been known for quite some time now - cards like Bruvac, the Grandiloquent, Waste Not, or Conjurers Closet to name a few
If you can stop that first search or the graveyard recursion, the decks resource loop breaks, leaving them with an incomplete board